The article covers the issues related to characteristics, application, and some methods of rare earth elements (REEs) recovery from coal fly ashes. REEs are with growing demand a very wide range especially when it comes modern technologies. conducted analysis price forecast proved existing upward tendency, this confirmed need search for new REE sources, among industrial waste (proecological eff...

In stochastic programming and decision analysis, an important issue consists in the approximate representation of the multidimensional stochastic underlying process in the form of scenario tree. This paper presents the approach to generate the multistage multidimensional scenario tree out of a set of scenario fans. For this purpose, the multistage K-means clustering algorithm is developed. The ...

Combined asymptotics and numerics (CAN) give an insightful picture of shear layer cavities and provide a means of quickly visualizing the flow pattern within them. It appears that the recirculating flow can be modeled with inviscid approximations of the viscous flow for many practical cases. For bodies transiting the shear layer of such cavities such as in store separation, much of the details ...

Many actual multistage manufacturing processes are not serial structure, but parallel structure or hybrid structure. The quality relationship model for multistage manufacturing process with parallel structure was developed based on state space model. The quality relationship model of multistage manufacturing process with hybrid structure was developed via the hierarchical iteration method based...

In multistage manufacturing systems, modeling multiple quality indices based on the process sensing variables is important. However, classic technique predicts each variable one at a time, which fails to consider correlation within or between stages. We propose deep multi-task learning framework jointly predict all output in unified end-to-end according sequential system architecture MMS. Our n...

We introduce and analyze “multistage situations”, which generalize “multistage games” (which, in turn, generalize “repeated games”). One reason for this generalization is to avoid the perhaps unrealistic constraint inherent to noncooperative games that the set of strategy tuples must be a Cartesian product of the strategy sets of the players. Another reason is that in most economic and social a...

This work compares three postcombustion CO2 capture processes based on mature technologies for separation, namely, (i) absorption using an aqueous piperazine solution, (ii) adsorption Zeolite 13X in conventional fixed beds (either vacuum swing or temperature adsorption), and (iii) multistage membrane separation a polymeric material (with CO2/N2 selectivity of 50 permeability 1700 GPU). All plan...